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SequenceNumberSet

Struct SequenceNumberSet 

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pub struct SequenceNumberSet {
    pub bitmap_base: SequenceNumber,
    pub num_bits: u32,
    pub bitmap: Vec<u32>,
}
Expand description

Bitset von Sequence-Numbers ab bitmap_base. Wird in HEARTBEAT/ ACKNACK/GAP genutzt, um Mengen verlorener oder bekannter Pakete zu signalisieren.

Wire-Layout (variable Laenge): bitmapBase: 8 Byte (SequenceNumber, big oder little gemaess Header) numBits: 4 Byte (u32) bitmap: ceil(numBits/32) * 4 Byte (u32-Words)

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§bitmap_base: SequenceNumber

Erste Sequence-Number, fuer die das erste Bit zustaendig ist.

§num_bits: u32

Anzahl gueltiger Bits.

§bitmap: Vec<u32>

ceil(num_bits/32) u32-Worte.

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impl SequenceNumberSet

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pub fn wire_size(num_bits: u32) -> usize

Berechnet die Wire-Size in Bytes basierend auf num_bits.

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pub fn from_missing(base: SequenceNumber, missing: &[SequenceNumber]) -> Self

Baut ein SequenceNumberSet aus einer sortierten Liste fehlender SNs.

base ist die kleinste noch nicht acked SN (der AckNack-Base). missing muss aufsteigend sortiert und alle SNs ≥ base sein. Bits werden in RTPS-Konvention gesetzt: Bit 0 ist das hoechstwertige Bit (MSB) von bitmap[0].

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pub fn iter_set(&self) -> impl Iterator<Item = SequenceNumber> + '_

Iteriert ueber alle SNs, deren Bit gesetzt ist.

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pub fn encoded_size(&self) -> usize

Tatsaechliche Wire-Size dieses Sets.

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pub fn write_to(&self, out: &mut Vec<u8>, little_endian: bool)

Encoded das Set in out mit der gegebenen Endianness.

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pub fn read_from( bytes: &[u8], offset: usize, little_endian: bool, ) -> Result<(Self, usize), WireError>

Decoded ein Set aus bytes ab offset. Liefert (Set, neue Position).

§Errors

UnexpectedEof.

Trait Implementations§

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impl Clone for SequenceNumberSet

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fn clone(&self) -> SequenceNumberSet

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SequenceNumberSet

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for SequenceNumberSet

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fn eq(&self, other: &SequenceNumberSet) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for SequenceNumberSet

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impl StructuralPartialEq for SequenceNumberSet

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.